js处理后台json数据加载下拉列表

               var content = "<option>请选择:</option>";
                var val = $("#groupall_ssi").val();//   获取隐藏域的值，json类型的字符串

                var valueoff = $('#countrySelect5').val();

                var obj = jQuery.parseJSON(val);// 解析字符串获得json对象

                $.each(obj, function(key, my_value) {

                if ( key == valueoff ) {

                    $.each(my_value,function(i, data_value){

                        content += "<option value="+data_value.group_no+">"+data_value.group_name+"</option>";

                    });

                }

                });

                $("#countrySelect6").html(content);                

                }